21792155

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{107}}^1$

素因数の和:176

約数の個数: 48

約数和(自身を含む): 34401024

約数和(自身を除く): 12608869

約数列:

[1, 5, 7, 11, 23, 35, 55, 77, 107, 115, 161, 253, 385, 529, 535, 749, 805, 1177, 1265, 1771, 2461, 2645, 3703, 3745, 5819, 5885, 8239, 8855, 12305, 17227, 18515, 27071, 29095, 40733, 41195, 56603, 86135, 135355, 189497, 203665, 283015, 396221, 622633, 947485, 1981105, 3113165, 4358431, 21792155]

約数ペア:

[(1, 21792155), (5, 4358431), (7, 3113165), (11, 1981105), (23, 947485), (35, 622633), (55, 396221), (77, 283015), (107, 203665), (115, 189497), (161, 135355), (253, 86135), (385, 56603), (529, 41195), (535, 40733), (749, 29095), (805, 27071), (1177, 18515), (1265, 17227), (1771, 12305), (2461, 8855), (2645, 8239), (3703, 5885), (3745, 5819)]